Permutation-lock



' UNITED STATES PATENT OFFICE.

CARL E. J OI-IANSON, OF BOSTON, MASSACHUSETTS.

PERM UTATION-LOCK.

SPECIFICATION forming part of Letters Patent No. 420,625, dated.February 4, 1890.

Application filed September 14, 1889 Serial No. 323,966. (No model.)

To aZZ whom it may concern:

Be it known that 1, CARL E. JOHANsON, a citizen of Sweden, and aresident of Boston, in the county of Suffolk and State of Massachusetts,have invented new and useful Improvements in Permutation-Locks, of whichthe following, taken in connection with the accompanying drawings, is aspecification.

This invention relates to improvements in safe or door locks, and it iscarried out as follows, reference being .had to the accompanyingdrawings, where- Figure 1 represents a front elevation of the door. Fig.2 represents an elevation of the safe and its door, the latter beingshown as swung open. Fig. 3 represents an interior View of the doorplate or cover. Fig. 4 represents an elevation of the safe-door, showingits plate or cover as removed; and Fig. 5 represents an enlargedcrosssection of the door and safe on the line X X, shown in Fig. 4.

Similar letters refer to similar parts wherever they occur on thedifferent parts of the drawings.

a represents the door-frame, hinged to the safe-body b by means ofsuitable hinges c c, as shown.

d is the door plate or cover, riveted or otherwise firmly secured to thefront of the doorframe Ct, and a is a plate or partition secured to thedoor-frame a below its cover, with a space between said parts forcontaining the operative mechanism by which the bolts are actuated.

In perforations in the outer-and inner doorplates Z a are journaled thespindles e and f, having secured to their respective outer ends theknobs or handles E F. (Shown in Fig. 1.) On the inside of the plate (Zis located the gong or bell G. (Shown in Fig. 3.)

e and f are notched wheels secured, respectively, to the spindles e andf on the inside of the door-plate d, which, as they are rotated, imparta rocking motion to the respective spring-pressed hammerlevers E F andtheir hammers E F", by which the gong or bell G is sounded one strokefor every time that either of said hammer-levers is actuated by a toothon one of said wheels 6 f, as shown in Fig. 3.

The levers E F are preferably provided with the respective anti-frictionrollers e"f,

so as to permit an intermittent movement of the handles E F and theirnotched wheels 6 f, for the purpose of actuating the springpressedhammer-levers E F and sounding the gong or bell Gr without muchfrictional resistance.

To the spindle e is secured the spur-gear 7b, the teeth of which meshinto the teeth of the intermediate gear h, loosely journaled on a studor pin secured to the door-plate a, as shown in Figs. 4 and 5.

The teeth ofthe gear h mesh in the teeth of the toothed block orbolt-carrier H, which is arranged in suitable guides in the door a, andit will thus be seen that by turning the handle E an upand-downmovement'is imparted to the block or bolt-carrier H.

In the carrier H is journaled the bolt Z, that passes through a slot toin the doorplate a, and terminates below the latter asan enlargedbolt-head Z, having a side projection, as shown in Fig. 2.

To the bolt Z is secured the pinion Z, the teeth of which mesh into theteeth of the stationary rack Z secured to the door-frame a, as shown inFig. 4., and it will thus be seen that a rotary motion is imparted tothe'bolt Z as the block or bolt-carrier H is moved up or down.

H is a set-screw made adjustable in the upper end of the movablebolt-carrier H, for the purpose of limiting and adjusting the upwardmotion of the said bolt-carrier, as may be desired by the person incharge of the safe.

Within the safe-frame b is secured a plate T, having a Vertical slot L,coinciding with the slot 0/ in the door when the latter is closed, saidslot L having its upper end L enlarged and made of a size and shapecorresponding to the bolt-head Z, as shown in Fig. 2, so as to permitthe latter to enter and pass through the perforation L when the door isclosed and the bolt-head moved to a position coinciding with that of theperforation L.

After closing the door, if it is desired to lock it, all that isnecessary to do is to turn the knob E sufficiently to cause the block Hand boltZZ to be lowered far enough so that the bolt-head Z shall comeback of the narrow slot L, thus preventing the opening of the door untilthe block H is again raised and its bolt 1 Z raised and turned to aposition coinciding with that of the perforation L in the plate T, asshown in Fig. 2.

For certain safes, vaults, 850., a single bolt and operating mechanism,as above described, may be sullieient; but in practice I prefer to usetwo or more of such bolts and bolt-operating devices, as shown in Fig.4:, where 70 represents a spur-gear secured to the spindle f, said gearbeing geared to the toothed block or bolt-carrier K by means of theintermediate gears 7a 7a. The block K is constructed and arranged likethe block III aforesaid, and has journaled in it the bolt in, passingthrough a slot a in the door-plate a, and terminates below the latter asan enlarged head on, having a side projection, as shown in Fig. 2.

m is the pinion secured to the bolt on, the teeth of which mesh into theteeth of the rack m, secured to the door-frame a, and M is the slot inthe plate T, with its upper enlargement M, for the purpose of receivingand locking the head m of the bolt in in a manner as above mentioned.

K is an adjustable set-screw in the upper end of the block K for thepurpose of limiting the upward motion of said block toward the centralrib or projection N, that is secured to or forms a part of the door a,as shown in Fig. 4.

1n opening the door the operator first turns the knobs E and F, one inone direction and the other in an opposite direction, until the blocksII K are raised as far as the adjustable stop-screws H K will allow.Having previsitions that their heads shall coincide with the respectiveperforations L M, he turns the respective handles E F one at a time inopposite directions to that in which they were first turned, and countsthe number of sounds produced, stopping the turning of the handles whenthe desired strokes have been sounded, after which the door may freelybe swung open.

By adjusting the screws H K any desired number oi'strokes on the bellmay be agreed upon by the operator as necessary to be sounded forlowering the boltcarrying blocks after they have been moved upward totheir limits.

Having thus fully described the nature, construction, and operation ofmy invention, I wish to secure by Letters Patent and clairn- Theimproved safe or doorlock, as described, consisting of one or more knobsor handles on the outside of the door, each of said handles beingsecured to aspindle adapted when turned to operate a bellor sounder andconneeted by means of suitable gears to a sliding bolt-carrying block,in combination with a bolt journaled in said block and having a pinionattached to it, intermesliing with a stationary rack, and having a headin its end adapted to be locked in a slotted plate socured to the safe,substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subseribingwitnesses, on this 19th day of March, A. D.1889.

CARL E. JOIIANSON.

\Vitnesses:

ALBAN ANDREN, SELMA R SCHELIN.

